Professor Amit Bhattacharyya holds a Ph.D. in Population Economics from Brown University and has extensive research and teaching experience in many countries of the world. He has worked professionally in the United Nations most of his adult life and has written many books and articles. He is fully conversant with the United Nations, its history, culture, and its role in the world. He has retired from the UN and is currently a visiting fellow at Marymount Manhattan College. Read more.